1999 Mercedes Benz CLK320 Scan Code 0400 EGR malfunction

Tiny
FILLIP66
  • 1999 MERCEDES BENZ CLK320

Engine Mechanical problem
1999 Mercedes Benz CLK320 6 cyl Two Wheel Drive Automatic 180000 miles

My Check Engine light came on, I ran a scan and got a 0400 EGR Malfunction code. I have located what I think are the EGR valves (there are 2). Can they be removed, cleaned and replaced as opposed to replacing?

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Friday, July 18th, 2008 AT 12:43 PM

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Tiny
KLSHIEL
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I have never tried to clean them, but you can try some carburator cleaner to see if it helps. EGR valves usually just stop working properly rather than becoming clogged.

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Friday, July 18th, 2008 AT 12:55 PM
Tiny
DOCFIXIT
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You are dead on cleaning is the way to go. Make sure you clean prots in the intake. And check vacuum to valves the RPMS up at 2000

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Friday, July 18th, 2008 AT 12:56 PM

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